Lock mounting for hollow metal doors



Aug. 24, 1937. w. R. SCHLAGE LOCK MOUNTING FOR HOLLOW METAL DOORS FiledSept. 18, 1935 3 Sheets-Sheet 1 "1": IIIIIIIIII n- INVENTOR.

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A TTORNEY;

Aug. 24, 1937. w. R. SCHLAGE 2,091,248

LOCK MOUNTING FOR HOLLOW METALDOORS Filed Sept. 18, 1935 3 Sheets-Sheet2 INV NTOR. 102% 7?.

A TTORNEY- Aug. 24, 1937. w R SCHLAGE 2,091,248

LOCK MOUNTING FOR HOLLOW METAL DOORS Filed Sept. 18, 1955 5 Sheets-Sheet3 I N V? TOR. lira/Mu, 73.

A TTORNEY.

ia. E. W.

UNITED STATES PATENT OFFICE LOCK MOUNTING FOR HOLLOW METAL DOORS WalterR. Schlage, San Francisco, Calif., assignor to Schlage Look Company, SanFrancisco, n Calif., a corporation of California i} Emmi/gimp,

Application September 18, 1935, Serial No. 41,064

11 Claims.

This invention relates to a lock mounting for hollow metal noors.

In building structures, which are fireproof throughout, metal doors areemployed. Such 5 doors are usually constructed of metal and include ametal panel and a surrounding hollow metal stile. In some instances adoor of this type is provided with a lock which consists of twoseparable units, to wit, a latch or bolt unit and a latch or boltactuating unit. The latch unit is inserted in an opening formed in theedge of the stile while the latch actuating unit is inserted in anopening formed in opposite faces of the stile. These units, wheninstalled or inserted,

must be anchored with relation to each other and with relation to thestile of the door and they must be rigidly secured to prevent any playor rattle. The openings formed in the edge and in the opposite faces ofthe stile tend to weaken 0 the structure and in many instances the metalforming the stile is so thin that an anchorage between the lock unitsand the door is anything but substantial.

The object of the present invention is generally to improve and simplifythe construction and operation of lock mountings of the characterdescribed; to provide a member which is insertable through one of theopenings formed in the face of the stile which will assist in supportingthe lock mechanism when installed, and also serve to reinforce andstrengthen the stile; and, further, to provide means on the lockmechanism for anchoring and securing said reinforcing and supportingmember against removal when inserted.

The lock mounting is shown by way of illustration in the accompanyingdrawings, in which Fig. 1 is a horizontal cross section of a stile of ahollow metal door showing the manner in which the two lock units areassembled and installed;

Fig. 2 is a perspective view of a portion of the hollow metal stileshowing the openings formed in the edge and in the opposite faces of thestile;

Fig. 3 is a section similar to Fig. 1 showing a modified form of lockstructure;

Fig. 4 is a perspective view of the reinforcing and supporting platewhich is inserted between the inner faces of the stile;

Fig. 5 is a horizontal section showing another form of lock mechanismwhen installed;

Fig. 6 is a perspective view of the latch unit 55 shown in Fig. 5;

Fig. 7 is a perspective view showing the latch actuating mechanismdisclosed in Fig. 5;

Fig. 8 is a vertical section of the stile of a hollow metal door showinga guide for the latch or the latch unit and a modified form ofsupporting and reinforcing plate;

Fig. 9 shows a modification of the latch guide;

Fig. 10 is a perspective view of the reinforcing and supporting plateshown in Fig. 8;

Fig. 11 shows another form of reinforcing plate;

Fig. 12 is a perspective view of the latch actuating unit shown in Fig.1; and

Fig. 13 is a perspective view of the latch unit shown in Fig. 1.

Referring to the drawings in detail, and particularly Figs. 1, 2 and 4,A indicates the outer edge, and B and C the opposite faces of the hollowmetal stile of a door. Formed in the faces of the stile are openings Band C, and similarly formed in the outer edge of the stile is an openingA.

The type of lock illustrated in the present instance consists of twoseparable units, a latch unit indicated at D and a latch actuating unitindicated at E; the unit E being inserted through the openings '5 and Cand the unit D through the opening A. These units, when installed, mustbe anchored with relation to each other and the stile of the door andthey must be rigidly and substantially secured to prevent play orrattle.

The stile shown in Figs. 1 to 3 is constructed of fairly heavy metal,but that is not always the case as some door stiles are constructed offairly light metal, hence a reinforcing member interposed between theinner faces of the stile is essential. Such a reinforcing member isshown in Fig. 4. It consists of a metal plate rectangular or square inshape, as shown at 2, which is provided with a pair of lugs 3 and acentral opening l. The stile section B has a hole 5 punched or drilledtherein, see Fig. 2, while the stile section C has a notch cut thereinas shown at 6. The reinforcing plate 2 is smaller than the opening Cformed in the face of the stile and as such may be inserted therethroughand when inserted one of the lugs 3 will enter the hole 5, while theother lug will rest in the notch 6.

Means must also be provided for anchoring or securing the reinforcingplate against removal when inserted. This may be accomplished in severalways, for instance by providing hub members T on the escutcheon plates8, see Fig. 1, which snugly fit the openings B and C of the stile or byproviding a lock housing F, which projects through and fits the openingC, see Fig. 3. In either instance the lug resting in the notch 6 issecured against removal when the lock mechanism is installed, the otherlug being always secured as it enters the hole 5 and can not be releasedexcept by complete removal of the reinforcing plate.

The manner in which the two lock units are anchored with relation toeach other when in stalled in a door is best illustrated in Figs, 1, i2and 13. By referring to Figs. 12 and 13, it will be noted that thehousing E of the latch actuating unit is provided with a cut out portion9 which forms a pair of spaced parallel shoulders Ill-50. The cut outportion is provided for the reception of the inner end of the latch unitD. This unit has a pair of fingers ll-l| formed thereon which interlockwith the shoulders lllll3. It is in this manner that the two units areinterlocked and anchored with relation to each other. The interlock thusformed has a certain amount of play and the support given thereby wouldaccordingly permit rattle and play.

' In the present instance this is overcome by use of the plate 2. Thisplate not only serves as a reinforcing member between the opposite facesB and C of the stile but also as a support for the inner end of thelatch unit D, as clearly shown in Fig. 1.

In actual practice the reinforcing and supporting plate 2 is firstinserted through the opening C. As previously stated, the latch unit isnext inserted and then the latch actuating unit E. When this is insertedan interlock is formed between the fingers ii and the shoulder iii-l8and the two units are thus interlocked and connected, screws beingfinally inserted, as shown at l2, to permanently secure the entire lockmechanism in the stile. The two units, after installation, will berigidly secured and supported as the unit E is supported by the hubs ofthe escutcheon plates while the unit D will be supported, not only bythe fingers and shoulders l9 and H already described, but also by theplate 2. The plate 2, in addition to supporting the unit D, alsofunctions as a reinforcing plate between the inner faces of the stile.All play and rattle is thus prevented and a rigid, substantial anchorgeand mounting is insured.

In Figs. 1, 3 and 4 a flat reinforcing plate is disclosed. In Figs. 8and 10 a reinforcing plate of arcuate form is employed and may bedesirable in certain installations, particularly where the metal formingthe hollow stile is comparatively light or thin; the arcuate reinforcingplate being clearly shown at M in Fig. 10. It is also provided withlugs, as shown at l5-l5, and a central opening It to receive and supportthe inner end of the latch unit. If desired, the reinforcing plate mayassume the form of a split ring, as shown at I! in Fig. 11. This willafford even greater reinforcing than the arcuate plate. Whether one orthe other will be employed will depend entirely upon the degree ofreinforcement desired.

Where the metal of the door is comparatively heavy, as shown in Figs. 1to 3, no extra support is required for the outer end of the latch unit,but where the metal is comparatively thin an inturned flange, such asshown at l8 in Fig. 9, may be employed, or a bushing may be inserted andsuitably secured as shown at E9 in Fig. 8.

In Figs. 5 to '7 a modified form of lock mechanism is shown. This isalso suitable for installation in stiles of the character heredisclosed. In these drawings, G indicates the latch unit and H the latchactuating unit. One member of the latch actuating unit is shown inperspective view in Fig. '7. It will there be noted that a pair of postsare provided as shown at 2%] and 2|. These posts extend through openings22 and 23 formed in an anchor plate Ki l secured at the inner end of thelatch unit. When installing the lock, the latch unit G is firstinserted; secondly, the unit shown in Fig. '7, and when it is insertedthe posts 2d and 2! will pass through the openings 22 and 23 of theanchor plate. These posts secure the latch unit against endwise movementand they also form a support for the inner end of the latch unit butthey do not secure the latch unit against lateral movement. The hubs ofthe latch actuating unit, indicated at 25, serve this function. They aremade a little longer than the hubs shown on the escutcheon plates inFig. 1, and they are just sufficiently long enough to engage theopposite faces of the latch unit G and thereby secure said unit againstlateral movement. A reinforcing plate may be employed in connection withthis type of look but where a heavy metal structure is employed in theforms of the stile as shown in Fig. 5, such a plate is not essential andfor that reason is not shown.

Suffice it to say, that whether one type of lock or another is employed,the reinforcing plate is essential, particularly where the metalstructure of the door is comparatively thin and light, as said plate notonly reinforces the stile of the door but it also functions as a supportfor the inner end of the latch unit and in all instances secures itagainst lateral movement. The reinforcing supporting plate is seeminglysimple to construct and it is readily placed in position or removed whenassembling or removing the lock, and it should furthermore be noted thatit is insertable through one or another of the openings formed in theopposite faces of the stile of the door and as such can be inserted orremoved as desired.

Having thus described my invention, What I claim and desire to secure byLetters Patent is:

1. The combination with a hollow stile of a metal door, said stilehaving openings formed in the edge and in the face for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, and means for supporting said member between the inner faces ofthe stile when inserted.

2. The combination with a hollow stile of a metal door, said stilehaving openings formed in the face and in the edge for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, and means on the latch actuating unit for securing thereinforcing and supporting member against removal when inserted.

3. The combination with a hollow stile of a metal door, said stilehaving openings formed in the face and in the edge for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, and means on the latch actuating unit for securing thereinforcing and supporting member against removal when inserted.

4. The combination with a hollow stile of a metal door, said stilehaving openings formed in the face and in the edge for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, means on the latch actuating unit for securing the reinforcingand supporting member against removal when inserted, and means on saidreinforcing and supporting member for receiving and supporting one endof the latch unit.

5. The combination with ahollow stile of a metal door, said stile havingopenings formed in the face and in the edge for the reception of a latchunit and a latch actuating unit, means on the latch actuating unit forsupporting the inner end of the latch unit against vertical andlongitudinal movement, and other means on the latch actuating unit forsecuring the inner end of the latch unit against lateral movement.

6. The combination with a hollow stile of a metal door, said stilehaving openings formed in the edge and in the face for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, said reinforcing member engaging the inner faces of the stile,supporting lugs, one on each side of said member, the stile havingopenings formed therein for the reception of said lugs, and means on thelatch actuating unit engageable with one of the lugs to secure thereinforcing member against removal.

'7. The combination with a hollow stile of a metal door, said stilehaving openings formed in the face and in the edge for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, said reinforcing member engaging the inner faces of the stile,supporting lugs, one on each side of said member, the stile havingopenings formed therein for the reception of said lugs, a central 40opening formed in the reinforcing member to receive and support theinner end of the latch unit, and means on the latch actuating unitengageable with one of the lugs to secure the reinforcing member againstremoval.

8. The combination with a hollow stile of a metal door, said stilehaving openings formed in the face and in the edge for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member in-= sertable through the openings in the face ofthe stile, said reinforcing member engaging the inner faces of thestile, supporting lugs, one on each side of said member, the stilehaving openings formed therein for the reception of said lugs,escutcheon plates carried by the latch actuating unit, and hub memberson said plates, said hubs snugly fitting the openings formed in the faceof the stile and one of the hubs engaging one of the lugs on thereinforcing member and securing said member against removal.

9. The combination with a hollow stile of a metal door, said stilehaving openings formed in the edge and in the face for the reception ofa latch unit and a latch actuating unit, of a combination reinforcingand supporting member insertable through the openings in the face of thestile, means for supporting said member between the inner faces of thestile when inserted, and an opening formed in said member to receive andsupport the inner end in the latch unit. I

10. The combination with the hollow stile of a metal door, stile havingopenings formed in the edge and in the face thereof, of alatch actuatingunit insertable through the openings in the face of the stile, a latchunit insertable through the opening in the edge of the stile, and aplate disposed between the latch unit and the latch actuating unit andsecured between the inner faces of the stile, said plate supporting andguiding the inner end of the latch unit.

11. The combination with the holiow stile of a metal door, said stilehaving openings formed in the edge and in the face thereof, a latch unitinsertable in the opening formed in the edge of the stile, a face plateon the latch unit extending into and fitting said opening, a latchactuating unit insertable through the openings formed in the face of thestile, escutcheon plates on the latch actuating unit, said plates havingcollars extending into and fitting the openings in the face of thestile, and interlocking means formed between the two units whereby thelatch unit is secured against longitudinal movement and removal,

WALTER R. SCHLAGE.

